Negative-angle titanium alloy shape correcting die

Abstract

The utility model provides a negative-angle titanium alloy shape correcting die which comprises a bottom plate, two side plates, a lower shaping plate, an upper shaping plate, a right-angle triangular block, a limiting plate and a top plate, and the two side plates are vertically arranged on the two sides of the bottom plate in parallel; the upper shaping plate is matched with the lower shaping plate, the upper shaping plate and the lower shaping plate form a group of shaping molds, the number of the shaping molds is two, and the two groups of shaping molds are symmetrically arranged between the two side plates and can slide; a through groove is formed in the middle of the side plate, and the limiting plate can be inserted between the lower shaping plates through the through groove; the number of the right-angle triangular blocks is two, bevel edges of the right-angle triangular blocks are oppositely arranged on the lower end face of the top plate, the right-angle triangular blocks can be inserted between the two side plates, and slopes matched with the bevel edges of the right-angle triangular blocks are arranged on the upper shaping plate. The negative-angle titanium alloy shape correcting die provided by the utility model can correct the shape of a negative-angle titanium alloy part, has a better shape correcting effect, and can avoid the influence on the precision of the part due to friction and collision between the part and the die in the process of taking out the part.

Description

Technical Field

[0001] The utility model belongs to the field of aircraft part manufacturing tooling, and particularly relates to a negative angle titanium alloy shape correction die. Background Technique

[0002] During the aircraft manufacturing process, many various parts need to be manufactured and assembled to form a complete airframe. Among these parts, there are titanium alloy parts with negative angles. Due to manufacturing process methods or procedures, after the negative angle titanium alloy parts are formed by a hot forming die, a shape correction die is required to correct the shape so that the part accuracy meets the use standards. In the existing negative angle part shape correction process, the part is directly fixed on the shape correction die, and after the correction is completed, the operator directly takes it out. Since the die body is attached to the part, the angle of the part is likely to change during the taking-out process, resulting in friction and deformation with the die body, reducing the part accuracy, and it is not easy to take out the part. Content of the Utility Model

[0003] To solve the above problems, the utility model provides a negative angle titanium alloy shape correction die. During the process of taking out the part, the movable lower die plate can make way to avoid collision between the part and the die.

[0004] A negative angle titanium alloy shape correction die includes a bottom plate, side plates, a lower die plate, an upper die plate, right-angled triangular blocks, a limiting plate, and a top plate. There are two side plates, and the two side plates are fixed on both sides of the bottom plate in parallel and perpendicular, forming a trough-shaped structure to limit the lower die plate and the upper die plate. The upper end surface of the lower die plate is a forming surface, and the lower end surface of the upper die plate matches the upper end surface of the lower die plate. The upper die plate and the lower die plate form a set of forming dies, and the part is corrected through the connecting surface of the upper die plate and the lower die plate. There are two sets of forming dies, and the two sets of forming dies are installed symmetrically between the two side plates, so that the forming dies can slide between the two side plates. A through groove is opened in the middle of the side plates, and the limiting plate can be inserted between the two side plates through the through groove. When installed, the limiting plate is located between the two lower die plates. The limiting plate and the two lower die plates form the lower part of the shape correction die in the working state. After the limiting plate is taken out, the two lower die plates can slide closer to separate from the part, providing a space for taking out the part. There are two right-angled triangular blocks, and the two right-angled triangular blocks are installed on the lower end surface of the top plate, with the hypotenuses of the two right-angled triangular blocks facing each other, so that the right-angled triangular blocks can be inserted between the two side plates, and a slope matching the hypotenuse of the right-angled triangular block is set on the upper die plate, so that the two right-angled triangular blocks can be pressed on the upper part of the forming die. When the top plate is pressed down, the hypotenuse of the right-angled triangular block can exert pressure on the slope of the upper die plate, causing the upper die plates to approach each other for shape correction work.

[0005] To facilitate the insertion of the limit plate, a sliding groove is provided on the bottom plate, with both ends of the sliding groove connected to the through grooves of the two side plates. The bottom end of the limit plate can be inserted into the sliding groove, thereby restricting the moving direction of the limit plate during the insertion process.

[0006] To define the moving direction of the upper die plate and enable the upper die plate to move in a predetermined moving direction, a guiding groove is provided on the inner side of the top of the side plate, and a sliding block matching the guiding groove is provided on the upper die plate. The moving direction of the upper die plate is controlled through the cooperation of the sliding block and the guiding groove.

[0007] To make the straightening process more efficient, the right-angled triangular block is set as an isosceles right-angled triangle, so that the angles of the two hypotenuses are 45°, enabling the upper die plate to move more smoothly when being pushed by the right-angled triangular block.

[0008] The negative-angle titanium alloy straightening die provided by the present utility model can straighten negative-angle titanium alloy parts, has a good straightening effect, and can avoid the parts from rubbing and colliding with the die during the removal process, thereby affecting the part accuracy. Description of the Drawings

[0009] The following further elaborates on the present utility model in detail with reference to the drawings.

[0010] Figure 1 is a schematic structural diagram of the assembled state of the present utility model;

[0011] Figure 2 is a schematic structural diagram of the disassembled state of the present utility model;

[0012] Figure 3 is a schematic structural diagram of the bottom plate and the side plates;

[0013] Figure 4 is a schematic diagram of the installation state of the upper die plate and the lower die plate;

[0014] Figure 5 is a schematic structural diagram of the lower die plate and the side plates;

[0015] As shown in the figure: 1 - bottom plate; 2 - side plate; 3 - lower die plate; 4 - upper die plate; 5 - right-angled triangular block; 6 - limit plate; 7 - top plate; 8 - through groove; 9 - sliding groove; 10 - guiding groove; 11 - sliding block. Detailed Embodiments

[0016] To further illustrate the concept of the present utility model, the following further elaborates on the detailed embodiments of the present utility model with reference to the drawings:

[0017] A negative-angle titanium alloy shape-correcting die, comprising a bottom plate 1, side plates 2, a lower die plate 3, an upper die plate 4, right-angled triangular blocks 5, a limit plate 6, and a top plate 7. Select a rectangular metal plate as the bottom plate 1, vertically weld two side plates 2 on the two long sides of the bottom plate 1, cut a groove downward from the middle of the side plates 2 to form a through groove 8 in the middle of the side plates 2 and a sliding groove 9 on the upper end face of the bottom plate 1, and cut a guiding groove 10 at the upper inner side of the side plates 2 to complete the production of the entire die base, as Figure 3 shown. Select a rectangular metal plate as the top plate 7, weld two metal right-angled triangular blocks 5 at both ends of the top plate 7, make the hypotenuses of the two right-angled triangular blocks 5 face each other, and the thickness of the right-angled triangular blocks 5 is the same as the distance between the two side plates 2. The shape is an isosceles right triangle, so that the right-angled triangular blocks 5 can be exactly inserted into the middle of the side plates 2, as Figure 2 shown.

[0018] Machine the lower die plate 3 according to the surface shape of the machined part, so that the upper end face of the combined state of the two lower die plates 3 matches the shape of the part, and then machine the matching upper die plate 4. The thickness of the lower die plate 3 is the same as the distance between the side plates 2, so that the lower die plate 3 can slide between the side plates 2 as Figure 4 , Figure 5 shown. Select a metal plate as the limit plate 6. The thickness of the limit plate 6 is the same as the widths of the sliding groove 9 and the through groove 8, so that the limit plate 6 can be inserted into the sliding groove 9 and the through groove 8. Then, cut the connecting surfaces of the two lower die plates 3, each shaving off half of the thickness of the limit plate 6, so that the height of the limit plate 6 when inserted into the sliding groove 9 is the same as the height of the top of the lower die plate 3. When the limit plate 6 is clamped between the two lower die plates 3, the overall formed upper end face can match the shape of the part. The thickness of the upper die plate 4 is the distance between the outer end faces of the two side plates 2. Then, cut the side surface of the upper die plate 4 so that the thickness of the lower end side surface of the upper die plate 4 is the same as the distance between the side plates 2, and form a slider 11 matching the guiding groove 10 at the middle position, so that the upper die plate 4 can slide freely in the guiding groove 10. Then, cut a slope on the outer side of the upper end of the upper die plate 4, and the slope of the slope is 45°, as Figure 4 shown.

[0019] When performing shape correction, first insert the limit plate 6 into the through groove 8 so that the lower end of the limit plate 6 is located in the sliding groove 9. Then, place the lower die plate 3 on both sides of the limit plate 6, and a complete shape-correcting surface is formed at the top. Place the shape-correcting part on the shape-correcting surface. After fixing the part, insert the upper die plate 4 from both ends of the side plates 2 so that the upper die plate 4 contacts the part, as Figure 4 shown. Then, press down the top plate 7 from the upper end of the side plates 2 so that the two right-angled triangular blocks 5 are inserted into the middle of the side plates 2. During the pressing process of the top plate 7, the right-angled triangular blocks 5 continuously apply an obliquely downward force to the slope of the upper die plate 4 through the hypotenuse, so that the two upper die plates 4 continuously approach each other. During the approaching process, the upper die plate 4 fits more and more tightly with the lower die plate 3, thereby performing shape correction on the part clamped in the middle, as Figure 1 shown.

[0020] After the sizing is completed, lift the top plate 7 so that the right-angled triangular block 5 is removed from the side plate 2, then slide the two upper die plates 4 outwards, and then remove the limit plate 6 through the through slot 8. At this time, the partition between the two lower die plates 3 is lost and they can get closer to each other. When the two lower die plates 3 come into contact with each other, the part is separated from the surface of the lower die plate 3, forming a free space. At this time, removing the part from the lower die plate 3 will not cause deformation of the part, thereby improving the sizing accuracy of the part.

[0021] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made. Any modifications, equivalent replacements, improvements, etc. made using the present invention shall be included within the protection scope of the present invention.

Claims

1. A negative angle titanium alloy shaping die, characterized in that: It includes a bottom plate (1), side plates (2), a lower mold plate (3), an upper mold plate (4), right-angled triangular blocks (5), a limiting plate (6) and a top plate (7). The number of the side plates (2) is two, which are vertically arranged in parallel on both sides of the bottom plate (1); the upper end surface of the lower mold plate (3) is a forming surface, the lower end surface of the upper mold plate (4) matches the upper end surface of the lower mold plate (3), the upper mold plate (4) and the lower mold plate (3) form a set of forming molds, the number of the forming molds is two sets, and the two sets of forming molds are symmetrically arranged between the two side plates (2), and the forming molds can slide between the two side plates (2); a through groove (8) is formed in the middle of the side plate (2), and the limiting plate (6) can be inserted through the through groove (8), and the limiting plate (6) is located between the two lower mold plates (3); the number of the right-angled triangular blocks (5) is two, and the hypotenuses of the two are arranged opposite to each other on the lower end surface of the top plate (7). The right-angled triangular blocks (5) can be inserted between the two side plates (2) and pressed on the upper part of the forming molds, and a slope matching the hypotenuse of the right-angled triangular block (5) is provided on the upper mold plate (4).

2. The negative angle titanium alloy shape-correcting die according to claim 1, wherein: A sliding groove (9) is formed in the bottom plate (1), and the two ends of the sliding groove (9) are respectively connected to the through grooves (8) of the two side plates (2).

3. The negative angle titanium alloy shape correction die according to claim 2, characterized in that: A guiding groove (10) is formed in the inner side of the top of the side plate (2), and a sliding block (11) matching the guiding groove (10) is provided on the upper mold plate (4).

4. The negative angle titanium alloy shape correction die according to claim 3, characterized in that: The right-angled triangular block (5) is an isosceles right-angled triangle.

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